praetorian(n = noun.person) praetorian guard - a member of the Praetorian Guard;
is a kind of bodyguard, escort
is a member of praetorian guard

1.  praetorian(a = adj.pert) praetorial, pretorial, pretorian - of or relating to a Roman praetor; "praetorial powers"
Derived form noun praetor₁

2.  praetorian(s = adj.all) pretorian - characteristic of or similar to the corruptible soldiers in the Praetorian Guard with respect to corruption or political venality; "a large Praetorian bureaucracy filled with ambitious...and often sycophantic people makes work and makes trouble"

praetorian, adj. & n. (US pretorian) Rom.Hist.
--adj. of or having the powers of a praetor.
--n. a man of praetorian rank.

Idiom:
praetorian guard the bodyguard of the Roman emperor.

Etymology:
ME f. L praetorianus (as PRAETOR)

praetorian guard